Home / 13,114.38-18,098.28-7,145.76

Finding the Fourth Proportional to 13,114.38, 18,098.28 and 7,145.76

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Solution

The fourth proportional to 13,114.38, 18,098.28 and 7,145.76 is: 9,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.38 : 18,098.28 = 7,145.76 : x
  2. Step 2: Convert to fraction form
    13,114.38/18,098.28 = 7,145.76/x
  3. Step 3: Cross multiply
    13,114.38x = 18,098.28 × 7,145.76
  4. Step 4: Simplify right side
    13,114.38x = 129,325,965.29
  5. Step 5: Solve for x
    x = 129,325,965.29/13,114.38
  6. Step 6: Final answer
    x = 9,861.39

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Half scale
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Double scale
Find fourth proportional to 13,115.38, 18,099.66 and 7,146.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.